Liquid treating apparatus

Abstract

A liquid treating apparatus includes a treating tank having at least two walls formed with a liquid inlet and a liquid outlet through each of which a liquid to be treated flows, respectively, and a filtering layer unit including an antibacterial filtering layer, an adsorptive filtering layer and a filtering layer, the filtering layer unit being disposed between the liquid inlet and outlet.

1. A liquid treating apparatus comprising:
 a treating tank having at least two walls formed with a liquid inlet and a liquid outlet through each of which a liquid to be treated flows, respectively; and 
 a filtering layer unit including an antibacterial filtering layer, an adsorptive filtering layer and a filtering layer, the filtering layer unit being disposed between the liquid inlet and outlet; and 
 wherein the antibacterial filtering layer comprises an antibacterial agent comprising a ceramic material serving as a carrier and silver carried on the carrier as an antibacterial component and said ceramic material is aluminum oxide powder, said antibacterial component comprises sodium borosilicate glass with dispersed inorganic silver and said antibacterial component is coated onto said aluminum oxide powder. 
 
   
   
     2. A liquid treating apparatus according to  claim 1 , further comprising a pretreatment tank disposed upstream relative to the treating tank and having at least two walls formed with a liquid inlet and a liquid outlet through each of which a liquid to be treated flows, respectively, and a rough filtration layer which is provided so as to surround the liquid outlet in the pretreatment tank and is capable of catching a grain which is contained in the liquid and has a grain size not less than 0.5 mm. 
   
   
     3. A liquid treating apparatus according to  claim 2 , wherein the adsorptive filtering layer includes an adsorbing material having a specific surface area substantially equal to 950 m 2 /g. 
   
   
     4. A liquid treating apparatus according to  claim 3 , wherein the filtering layer includes a filter medium catching not less than 90% of grain having a grain size not less than 10 μm. 
   
   
     5. A liquid treating apparatus according to  claim 2 , wherein the filtering layer includes a filter medium catching not less than 90% of grain having a grain size not less than 10 μm. 
   
   
     6. A liquid treating apparatus according to  claim 1 , wherein the adsorptive filtering layer includes an adsorbing material having a specific surface area substantially equal to 950 m 2 /g. 
   
   
     7. A liquid treating apparatus according to  claim 6 , wherein the filtering layer includes a filter medium catching not less than 90% of grain having a grain size not less than 10 μm. 
   
   
     8. A liquid treating apparatus according to  claim 1 , wherein the filtering layer includes a filter medium catching not less than 90% of grain having a grain size not less than 10 μm. 
   
   
     9. A liquid treating apparatus according to any one of  claims 1 ,  2 ,  6 ,  8 ,  5 ,  7  and  4 , wherein the antibacterial filtering layer, the adsorptive filtering layer and the filtering layer are attachable and detachable independent of one another.